A barnacle is an arthropod belonging to the infraclass Cirripedia in the subphylum Crustacea. Barnacle may also refer to: Barnacle (surname) Barnacle (slang), an electronic part manually installed onto a printed circuit board to correct a functional deficiency Seborrheic keratosis, a non-cancerous benign skin growth, known as the "barnacles of old age" Barnacle (comics), a character from Marvel Comics Barnacle, Warwickshire, a small hamlet in Warwickshire, England "Barnacles", a 2002 song by Ugly Casanova from Sharpen Your Teeth See also The Barnacle Historic State Park, a Florida State Park Barnacle goose, a species of bird Barnacle Boy, a SpongeBob SquarePants character